rt-thread无法创建线程 编译报错

16638320887

Build target 'LED'
compiling main.c...
main.c(69): warning:  #177-D: function "thread2_entry" was declared but never referenced
  static void thread2_entry(void* parameter)
main.c: 1 warning, 0 errors
compiling stm32f10x_it.c...
compiling system_stm32f10x.c...
compiling led.c...
compiling delay.c...
compiling sys.c...
compiling usart.c...
compiling core_cm3.c...
assembling startup_stm32f10x_hd.s...
compiling misc.c...
compiling stm32f10x_gpio.c...
compiling stm32f10x_dbgmcu.c...
compiling stm32f10x_rcc.c...
compiling stm32f10x_usart.c...
compiling stm32f10x_tim.c...
assembling context_rvds.S...
compiling cpuport.c...
compiling clock.c...
compiling components.c...
compiling idle.c...
compiling ipc.c...
compiling irq.c...
compiling kservice.c...
compiling mem.c...
compiling object.c...
F:\keil\ARM\PACK\RealThread\RT-Thread\3.1.3\src\object.c(262): warning:  #550-D: variable "obj" was set but never used
          struct rt_object *obj;
F:\keil\ARM\PACK\RealThread\RT-Thread\3.1.3\src\object.c: 1 warning, 0 errors
compiling scheduler.c...
compiling thread.c...
compiling timer.c...
compiling board.c...
linking...
..\OBJ\LED.axf: Error: L6218E: Undefined symbol rt_thread_create (referred from main.o).
Not enough information to list image symbols.
Finished: 1 information, 0 warning and 1 error messages.
"..\OBJ\LED.axf" - 1 Error(s), 2 Warning(s).
Target not created.
Build Time Elapsed:  00:00:12

511386807

配置文件中默认使用的是静态内存，如果要使用动态内存，需要修改配置文件。可以参考这个https://blog.csdn.net/qq_20222919/article/details/110956288

高成

你看看你工程里面有没有加入rt_thread_create函数所在的文件，这个就是函数没有实现出的问题

aozima

使用 rt_thread_create 需要使能动态内存

JerryHandsome

动态内存的话可以使用rt_thread_init函数来进行创建线程，若是动态的话需要打开堆的宏定义，你可以看一下配置文件里面需要打开宏定义

yikexiaoshu

函数未定义，应该是动态的宏没打开。直接用init就可以，不用creat。对stm32来说静态的就行，内存很小搞动态的容易出碎片。